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TM 9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E. FLASHCODE: 21
J1587 CODE:
P913-
ELECTRONIC FOOT PEDAL ASM (EFPA) CIRCUIT FAILED HIGH
(VOLTAGE HIGH) ALSO CALLED THROTTLE POSITION SENSOR
(TPS)
STEP/SEQUENCE
21-5 (Deleted)
21-9 Check TPS
Connectors
Inspect terminals at the TPS
connectors (sensor side and
harness side) for damage; bent,
corroded, and unseated pins of
sockets.
21-7
Check for Short
Turn ignition off.
Disconnect the vehicle harness
connector at the ECM.
Read resistance between sockets
D2 and A3 on the vehicle harness
connector.
21-8
Check for Short to
Battery +
Disconnect batteries (para 7-61).
Disconnect the vehicle harness
and 5-way power harness
connectors at the ECM.
Read resistance between socket
D2 of the vehicle harness
connector and socket B3 of the
vehicle harness connector.
Also read resistance between
socket D2 on the vehicle harness
connector and the following
sockets on the B-way power
harness connector: A and C.
RESULT
Terminals and
connectors are okay.
Problem found.
Less than or
equal to 10,000 ohms.
Greater than
10,000 ohms or open.
All readings are
greater than 10,000 ohms
or open.
Any reading is
less than or equal to
10,000 ohms.
WHAT TO DO NEXT
Replace TPS (Electronic Throttle)
(para 7-28). Then go to 21-30.
Repair terminals/connectors
(para 7-77). Then go to 21-30.
Signal line (ckt #417) is shorted
to the vehicle + 5 volt line (ckt
#916). Repair short. Then go to
21-30.
Go to 21-8.
Go to 21-9.
A short exists between the
sockets where less than 10,000
ohms resistance was read.
Repair short. Then go to
21-30.
H-141
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